Mirrored and hollow mirrored parallelogram star pattern in Java using Do-while

Mirrored and Hollow mirrored parallelogram star pattern in Java using Do-while

In this article, we will discuss the concept of Mirrored and hollow  mirrored parallelogram star pattern in Java using Do-while

In this post, we are going to learn how to write a program to print  mirrored parallelogram, and  Hollow mirrored parallelogram patterns using do-while loop in Java programming language.

 

Display parallelogram  star patterns Using Do- while loop

Code to print mirrored parallelogram star pattern

Program 1

This program allows the user  to enter the number of rows ,columns and any symbols then it will display  the mirrored parallelogram    star pattern using do-While loop in Java programming language

//program to print Mirrored parallelogram star pattern using do-while
import java.util.Scanner;
public class MirroredparallelogramStarDoWhile{//class declaration
public static void main(String args[]){//main method

 Scanner scan=new Scanner(System.in); 
    //create a scanner object for input
    
System.out.println("Enter the number of rows: ");
//Ask input from the user to rows
int rows=scan.nextInt();
//Reading the number of rows entered by user

System.out.println("Enter the number of columns: ");
//Ask input from the user to columns
int columns=scan.nextInt();
//Reading the number of columns entered by user

System.out.println("Enter Symbol as you wish: ");
//Ask input from the user as symbol
char ch=scan.next().charAt(0);
//Reading the symbol entered by user

System.out.print("\n");
int i=1; 
do{//outer do-while loop 
int j=1; 
   do{//inner do-while loop
   System.out.print(" ");//print space
    j++;
   }while(j<=i);
   j=1; 
  do{//inner do-while loop
   System.out.print(ch);//print symbol after space
    j++;
} while(j<=columns);
 System.out.print("\n");//move to next line
  i++;
}while(i<=rows);
}
}

When the above code is executed, it produces the following result

 

Code to print mirrored hollow parallelogram star pattern

Program 2

This program allows the user  to enter the number of rows ,columns and any symbols then it will display  the mirrored Hollow parallelogram    star pattern using do-While loop in Java programming language

//Program to print Hollow Mirrored parallelogram star pattern using do-while loop
import java.util.Scanner;
public class HollowMirroredparallelogramDoWhile{//class declaration
public static void main(String args[]){//main method

 Scanner scan=new Scanner(System.in); 
    //create a scanner object for input
    
System.out.println("Enter the number of rows: ");
//Ask input from the user to rows
int rows=scan.nextInt();
//Reading the number of rows entered by user

System.out.println("Enter the number of columns: ");
//Ask input from the user to columns
int columns=scan.nextInt();
//Reading the number of columns entered by user

System.out.println("Enter Symbol as you wish: ");
//Ask input from the user as symbol
char ch=scan.next().charAt(0);
//Reading the symbol entered by user

System.out.print("\n");
int i=1;
do{//outer while loop 
int j=1;
  do{//inner while loop
   System.out.print(" ");//print space
    
     j++;
   } while(j<=i);
   j=1; 
do{//inner while loop
   if(i==1 || i==rows || j==1 || j==columns){
       System.out.print(ch);//print symbol after space
   }
   else{
       System.out.print(" ");//print symbol after space
   }
    j++;
}  while(j<=columns);
 System.out.print("\n");//move to next line
 i++;
}while(i<=rows);
}
}

When the above code is executed, it produces the following result

 

 

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